BER performance analysis of PIN photodiode in 10Gbps fiber optical communication

In this report, the performance analysis of 10Gbps optical receiver for fiber optical link is presented. Non-Return to Zero (NRZ) electrical signals from a Pseudo-Random Bit Sequence (PRBS) Generator are used as modulation input. Signals in the optical domain are detected at the PIN photodiode (PIN-PD) and are converted into electrical output signals. These electrical signals are filtered through a low pass bessel filter. Effects of bandwidth and thermal noise of receiver on the link performance are studied in detail. For the 10Gbps fiber optical communication, a Q factor of 6.55 and the BER of 5.23E¿11 are observed for the worstcase, when the receiver is operated at 100°C. it is shown that BER heavily depends on thermal noise. The relation between the receiver sensitivity and the thermal noise is also investigated.